What rotor system has blades connected to the hub so they can freely change pitch and move up and down and fore and aft in their plane of rotation?

What rotor system has blades connected to the hub so they can freely change pitch and move up and down and fore and aft in their plane of rotation?

• A. Articulated Rotor
• B. Autopilot
• C. Blade Coning
• D. Blade Feather or Feathering

Answer: (A)

The key idea is that blades attached to the hub with hinges can move freely to change pitch and also flap up and down or lag fore and aft as they rotate. That hinge-based freedom describes an articulated rotor system. With this setup, each blade can respond independently to cyclic and collective inputs, allowing the blade to change pitch while simultaneously moving in the plane of rotation to absorb gusts and distribute loads. This is distinct from other terms: autopilot is a flight-control system, blade coning is the upward bending due to lift, and blade feathering refers to setting blades to a high pitch to reduce drag, not to the hinge-based movement of the blades.

The key idea is that blades attached to the hub with hinges can move freely to change pitch and also flap up and down or lag fore and aft as they rotate. That hinge-based freedom describes an articulated rotor system. With this setup, each blade can respond independently to cyclic and collective inputs, allowing the blade to change pitch while simultaneously moving in the plane of rotation to absorb gusts and distribute loads. This is distinct from other terms: autopilot is a flight-control system, blade coning is the upward bending due to lift, and blade feathering refers to setting blades to a high pitch to reduce drag, not to the hinge-based movement of the blades.